What is ChatGPT?
ChatGPT is an abbreviation of Generative Pre-trained Transformer.
ChatGPT is an artificial-intelligence (AI) chatbot developed by OpenAI and launched in November 2022. It is built on top of OpenAI's GPT-3.5 and GPT-4 families of large language models (LLMs) and has been fine-tuned (an approach to transfer learning) using both supervised and reinforcement learning techniques.
ChatGPT was launched as a prototype on November 30, 2022. It garnered attention for its detailed responses and articulate answers across many domains of knowledge.[3] Its uneven factual accuracy, however, has been identified as a significant drawback.[4] Following the release of ChatGPT, OpenAI's valuation was estimated at US$29 billion in 2023.[5]
The original release of ChatGPT was based on GPT-3.5. A version based on GPT-4, the newest OpenAI model, was released on March 14, 2023, and is available for paid subscribers on a limited basis.
What are the uses of ChatGPT?
Although the core function of a chatbot is to mimic a human conversationalist, ChatGPT is versatile. For example, it can write and debug computer programs; compose music, teleplays, fairy tales, and student essays; answer test questions (sometimes, depending on the test, at a level above the average human test-taker);write poetry and song lyrics; emulate a Linux system; simulate an entire chat room; play games like tic-tac-toe; and simulate an ATM.
ChatGPT's training data includes man pages and information about internet phenomena and programming languages, such as bulletin board systems and the Python programming language.
What are the limitations of ChatGPT?
ChatGPT has multiple limitations. OpenAI acknowledges that ChatGPT "sometimes writes plausible-sounding but incorrect or nonsensical answers"This behavior is common to large language models and is called "hallucination". The reward model of ChatGPT, designed around human oversight, can be over-optimized and thus hinder performance, in an example of an optimization pathology known as Goodhart's law.
ChatGPT has limited knowledge of events that occurred after September 2021.
GPT-4:
Generative Pre-trained Transformer 4 (GPT-4) is a multimodal large language model created by OpenAI and the fourth in its GPT series. It was released on March 14, 2023, and has been made publicly available in a limited form via ChatGPT Plus, with access to its commercial API being provided via a waitlist. As a transformer, GPT-4 was pretrained to predict the next token (using both public data and "data licensed from third-party providers"), and was then fine-tuned with reinforcement learning from human and AI feedback for human alignment and policy compliance.
Compared with its November 2022 predecessor, ChatGPT, observers reported GPT-4 to be an impressive improvement on ChatGPT, with the caveat that GPT-4 retains some of the same problems. Unlike ChatGPT, GPT-4 can take images as well as text as input. OpenAI has declined to reveal technical information such as the size of the GPT-4 model.
How do I access GPT-4?
1. To get to ChatGPT-4, you will need the paid version of the site, ChatGPT+. Here's how you can get a subscription:
2. Open up the ChatGPT site, at https://chat.openai.com/
3. If you already have access to ChatGPT+, then the site will take you directly to ChatGPT4.
4. If you don't have the premium version, you'll have to upgrade from the sidebar, by selecting the 'Upgrade to Plus' option.
5. The upgrade option will show you a comparison between the free and premium versions
6. Once you've paid the piper, you'll get full access to the latest version of the chatbot.
7. When starting a new chat, a pulldown will give you the option to use one of the old models or GPT-4. Do note that ChatGPT-4 is slower than the other models, but is far more complex in interactions, with OpenAI terming their new release the most human yet.
No free AI for you
There is currently no way to access the latest iteration for free, unless you're a Bing user. Microsoft - which recently invested billions in ChatGPT parent OpenAI - has announced that their chatbot is being powered by the latest version of the AI.
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